Transactional SMS

Transactional SMS API

MailerSend’s transactional SMS API enables you to enhance the customer experience by sending high-volume, toll-free SMS using a unique and recognizable phone number.


Reach more customers with toll-free messaging

Improve the customer experience and enjoy high delivery and open rates by sending timely SMS messages directly to recipients’ mobile phone numbers.

Multiple sending configurations

Send qualified SMS text messages to opt-in recipients, triggered by their actions or your email flow.
Automatically stop sending when they opt out.


Customize messages to fit your brand

Your brand is your most valuable asset—make it shine while building stronger customer relationships with pre-made templates, GIFs and images.


Developer-friendly resources

Start to send and receive SMS in minutes with our regularly updated SDK libraries, low-code/no-code integrations and comprehensive API documentation.


Spark conversations

Take customer service to the next level by allowing recipients to reply and engage in conversations via SMS.

Plus, the same great MailerSend features:

Easy management

Manage multiple phone numbers from your API, keeping suppressions and templates separate.

Activity & Analytics

View your activity in real-time to gain insights about SMS delivery and recipient activity and make adjustments when needed.

Account management

Effortlessly manage each user and their level of access to your emails, SMS activity or individual phone numbers.

Enrich the customer experience with SMS notifications

Get started with real-time SMS service for appointment reminders, two-factor authentication, time-sensitive notifications, service alerts, booking/order confirmation, and more using our REST API.

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